In order to minimize the harmonic distortion rate of the current at the common coupling point,this paper proposes a coordinated allocation strategy of harmonic compensation capacity considering the performance of acti...In order to minimize the harmonic distortion rate of the current at the common coupling point,this paper proposes a coordinated allocation strategy of harmonic compensation capacity considering the performance of active power filters(APF).On the premise of proportional distribution of harmonic compensation capacity,the harmonic compensation rate of each APF is considered,and the harmonic current value of each APF to be compensated is obtained.At the same time,the communication topology is introduced.Each APF takes into account the compensation ability of other APFs.Finally,three APFs with different capacity and performance are configured at the harmonic source to suppress the same harmonic source,and the harmonic distortion rate is reduced to 1.73%.The simulation results show that the strategy can effectively improve the compensation capability of the multiple APF cascaded system to the power grid without increasing the installed capacity.展开更多
Wireless power transfer(WPT)is gaining much attention for battery charging of electric vehicles(EVs).Resonant WPT systems play a crucial role in achieving efficient power transfer from source to load.An overview of tw...Wireless power transfer(WPT)is gaining much attention for battery charging of electric vehicles(EVs).Resonant WPT systems play a crucial role in achieving efficient power transfer from source to load.An overview of two-element resonant compensation techniques and their characteristics under various operating conditions are presented.Also the converter and control strategies used for different topologies are reviewed.The behavior of the performance factors are evaluated against the operating conditions and compared for the different topologies.展开更多
提出了SGD(shape global deformation)算法并将其应用于回弹补偿分析中,进行补偿面的修改。其原理是以原始曲面为基础进行的曲面整体变形修改,这种方法能够保证变形前后的型面整体拓扑关系的一致性,保证曲面的质量、光顺程度,以便获得...提出了SGD(shape global deformation)算法并将其应用于回弹补偿分析中,进行补偿面的修改。其原理是以原始曲面为基础进行的曲面整体变形修改,这种方法能够保证变形前后的型面整体拓扑关系的一致性,保证曲面的质量、光顺程度,以便获得更精确的回弹补偿型面。经多个实例分析表明,该算法能够在很大程度上节省修改补偿型面的时间和精力,较大地提高曲面精度,回弹补偿更加准确。展开更多
基金This work was supported in part by the National Natural Science Foundation of China(Grant No.61863023).
文摘In order to minimize the harmonic distortion rate of the current at the common coupling point,this paper proposes a coordinated allocation strategy of harmonic compensation capacity considering the performance of active power filters(APF).On the premise of proportional distribution of harmonic compensation capacity,the harmonic compensation rate of each APF is considered,and the harmonic current value of each APF to be compensated is obtained.At the same time,the communication topology is introduced.Each APF takes into account the compensation ability of other APFs.Finally,three APFs with different capacity and performance are configured at the harmonic source to suppress the same harmonic source,and the harmonic distortion rate is reduced to 1.73%.The simulation results show that the strategy can effectively improve the compensation capability of the multiple APF cascaded system to the power grid without increasing the installed capacity.
文摘Wireless power transfer(WPT)is gaining much attention for battery charging of electric vehicles(EVs).Resonant WPT systems play a crucial role in achieving efficient power transfer from source to load.An overview of two-element resonant compensation techniques and their characteristics under various operating conditions are presented.Also the converter and control strategies used for different topologies are reviewed.The behavior of the performance factors are evaluated against the operating conditions and compared for the different topologies.
文摘提出了SGD(shape global deformation)算法并将其应用于回弹补偿分析中,进行补偿面的修改。其原理是以原始曲面为基础进行的曲面整体变形修改,这种方法能够保证变形前后的型面整体拓扑关系的一致性,保证曲面的质量、光顺程度,以便获得更精确的回弹补偿型面。经多个实例分析表明,该算法能够在很大程度上节省修改补偿型面的时间和精力,较大地提高曲面精度,回弹补偿更加准确。
